Problems from Spotify Challenge 2011

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
All Just A Dream 1982 448 23% 0.05 319 225 71% 6.3
Cat Coat Colors 183 82 45% 0.00 78 69 88% 3.6
Imperial Measurement 1781 791 44% 0.00 716 663 93% 2.0
Peer Streaming 42 14 33% 0.04 15 10 67% 7.6
Playlist 343 48 14% 1.09 32 15 47% 9.1
Primary Register 1160 722 62% 0.00 640 596 93% 2.1
Square Pie 386 150 39% 0.07 39 30 77% 6.0
Wheel Game 119 15 13% 0.00 16 13 81% 6.5